CN101608927A - The system and method for the objective self-diagnosis of measuring equipment calibration condition - Google Patents
The system and method for the objective self-diagnosis of measuring equipment calibration condition Download PDFInfo
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- CN101608927A CN101608927A CNA2009101406365A CN200910140636A CN101608927A CN 101608927 A CN101608927 A CN 101608927A CN A2009101406365 A CNA2009101406365 A CN A2009101406365A CN 200910140636 A CN200910140636 A CN 200910140636A CN 101608927 A CN101608927 A CN 101608927A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- Measuring Fluid Pressure (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
A kind of measuring system is used a plurality of transducers that are different from each one another at least one aspect, such as having different principle of operation or being made by different manufacturers.The respective measurement values that obtains from transducer is applied to processor, and this processor provides a measured value based on the measured value from a plurality of transducers.This processor also provides the calibration drift information about each transducer based on comparing with the value that combination obtained of the respective measurement values that obtains from a plurality of transducers from the measured value of transducer acquisition.Calibration drift information provides the objective evaluating about the calibration condition of each transducer.When transducer was confirmed as exceeding its calibration error, the calibration requirements alarm just appearred.
Description
Technical field
The application relates to measuring system and method, and, more specifically, relate to the measuring system and the method that allow alignment epoch under very low-risk excessive prolongation, to prolong under the accuracy of measurement not damaging.
Background technology
Each measuring equipment is all along with time drift or variation.Because this drift, measuring equipment must regularly be recalibrated the measurement of being made by equipment with assurance and remain on usually in the tolerance that standard was limited by measuring equipment.Before its out-of-size, do not have and to have negative consequences by calibration measurement equipment, comprise cancellation or query all measurements of making since nearest calibration by equipment.The measurement that the failure of calibration can lead to errors on the spot, this is catastrophic with regard to quality, cost, security etc.Therefore expect very much to calibrate at interval with the recalibration of abundant weak point.
Though short recalibration be at interval expectation to guarantee accurate measurement, can increase calibration frequency at interval than required shorter recalibration, thereby increase direct and indirect calibration cost, such as instrument stop time, transportation and relevant risk.At present, recalibrate at interval usually based on similar devices experience arranged, and its greatest expected calibration drift based on measuring equipment is selected.
Select enough short recalibration difficulty at interval to increase the weight of owing to calibration drifts in the fact that occurs with different speed in the different measuring equipments.Therefore, the recalibration of measuring equipment is determined based on the calibration drift historical statistics ground of a large amount of similar devices at interval usually.Be chosen as then at interval the possibility accepted of allowing situation is provided when calibration.When recalibrating, exceed under error condition very expensive, must guard at interval, and therefore cause most measuring equipment, thereby unnecessarily increase cost than required earlier calibration.In addition, the statistical method of predictability identifies the outlier that its behavior obviously is offset the prediction behavior without any hope.
Therefore need a kind ofly recalibrate to select at interval replacement scheme is provided and exceed the system and method that can use longer recalibration interval under the danger of allowing situation so that when recalibrating, have to predictability
Summary of the invention
A kind of measuring system and method are carried out a plurality of measurements, and wherein at least some are measured with other measurement and carry out independently.This system acquisition of at least some from a plurality of corresponding measurements combined value then obtains measured value.The a plurality of measurements that obtained by this system and method also are used to provide the calibration drift information about the measuring equipment that is used for measuring, such as at least some the accuracy in a plurality of measurements whether less than the indication of pre-determined accuracy.
Description of drawings
Fig. 1 is the block diagram of pressure-measuring system according to an embodiment of the invention.
Fig. 2 is the side isometric view of pressure measuring device according to an embodiment of the invention.
Fig. 3 is the bottom isometric view of the pressure measuring device of Fig. 2.
Fig. 4 is the block diagram of electric measurement system according to an embodiment of the invention.
Embodiment
Measuring system 10 is shown in Figure 1 according to an embodiment of the invention.System 10 is used for gaging pressure, but principle of operation can be used to measure the system of any other kind physical descriptor (such as temperature) or electric signal feature (such as voltage or frequency).System 10 comprises three pressure transducers 12,14,16 with the corresponding inlet that is connected to shared pressure pipeline 18.Pressure transducer 12,14,16 provides the corresponding power supply 22,24,26 of power that power is provided by common source 28.Each of power supply 22,24,26 comprises provides the reference voltage source of regulation voltage 30a, b, c and with reference voltage from voltage source 30a, b, c are converted to the constant current source 32a of corresponding electric current, b, c.Yet dissimilar power supplys can use according to the character of the measuring equipment that uses in the system.Equally, though system 10 uses three pressure transducers 12,14,16 and relevant parts, also can only use two pressure transducers or more than three pressure transducer.Yet, three pressure transducers the 12,14, the 16th, make can identify provide with the pressure transducer of other significantly different measurement minimize the number transducer.
Each of pressure transducer 12,14,16 provide with the pipeline of measuring by transducer 12,14,16 18 in the corresponding analog output voltage of pressure.Output voltage is applied to corresponding analog/digital (" A/D ") converter 42,44,46, and they export the respective digital output signal of indication by the pressure of transducer 12,14,16 measurements respectively.Digital output signal from A/D converter 42,44,46 is applied to digital processing unit 48, and digital processing unit 48 for example can be the computer system that the application program that is fit to analytical algorithm is carried out in operation, as discussing in more detail below.The indication of measured pressure is not only determined and provided to digital processing unit 48, and determine and the relevant information of calibration drift that provides with pressure transducer 12,14,16.
A lot of algorithms can be used for determining gaging pressure and calibration drift.For example, the value that can obtain measured pressure from the tonometric mean value or the weighted mean value of each acquisition of pressure transducer 12,14,16.In certain embodiments, only two the measurement acquisition from pressure transducer 12,14,16 of measured force value, and the value by a measurement in the transducer 12,14,16 is left in the basket, because for example the excessive pressure ground of two pressure transducers of this force value and other, 12,14,16 measurements is different.The calibration drift energy obtains in several ways.For example, can compare with the mean value or the weighted mean value of measured pressure value by the force value of each measurement of pressure transducer 12,14,16.If, can provide indication transducer 12,14,16 to need the calibration alarm of calibration by the force value of any one measurement of transducer 12,14,16 and the different settings that surpass of mean value.Detecting and calibrating the alternate manner that has reached setting that drifts about is clearly to those skilled in the art.
Transducer 12,14,16 can be mutually the same, or two or more can differ from one another aspect a lot.For example, pressure transducer 12,14,16 can have different principle of operation, has the barrier film that electric wire strain gauge is installed such as transducer 12, transducer 14 has the barrier film that resonance wave beam force transducer is installed, and transducer 16 has the spring of in response to pressure changes compression or tensioning and the position transducer of position of the removable end of perception spring is installed.As another example, pressure transducer 12,14,16 can all use common principle of operation, but they can be made by different manufacturers.Alternatively, they can all use common principle of operation and be made by identical manufacturer, but from different production batch.Other variation between the pressure transducer 12,14,16 also is possible.Use the pressure transducer 12,14,16 that differs from one another in some aspects to tend to reduce its calibration drift with the possibility that matches each other.
The embodiment of pressure transducer 50 is shown in Fig. 2 and 3.Pressure transducer 50 comprises it being identical or different three pressure transducers 52,54,56 as explained above to each other.Each of transducer 52,54,56 comprises electric terminal 58, and transducer 52,54,56 is powered and can obtains thus the signal of indication measurement value by electric terminal 58.Transducer can be located around the pressure port 60 (Fig. 3) that extends from spherical shell 62 by three 90 degree axles symmetrically.Equally, hygrosensor 64 (Fig. 2) can equidistantly be located with all transducers 52,54,56.Even transducer 52,54,56 is positioned on the sphere symmetrically with the test pressure hole equidistantly guarantees their also whole pressurizeds in an identical manner of pressure change, so that can between the pressure of measuring by transducer, make effective comparison.In three 90 degree axles, provide all sensors not to be subjected to the independence of directed and gravity effect transducer orientation.In use, pressure port 60 can be towards any direction.
Measuring system 70 is shown in Figure 4 in accordance with another embodiment of the present invention.The voltage that system 70 uses three voltage measuring apparatus that separate 74,76,78 to measure on the electric wire 72.Each of voltage measuring apparatus 74,76,78 provides corresponding digital output to voltage processor 80, voltage processor uses suitable algorithm that the measuring voltage value is provided and the information relevant with calibrating drift as explained above, such as the calibration requirements alarm.Once more, voltage measuring apparatus 74,76,78 can be mutually the same, or they differ from one another aspect a lot of as previously explained.Voltage measuring apparatus 74,76,78 can be connected to electric wire 72 in identical position so that they are exposed to identical measurement environment.For example,, can have pressure drop, or voltage can capacitively be bonded to a position on the electric wire 72 to the degree more greater or lesser than another position along the length of electric wire if voltage measuring apparatus 74,76,78 is connected to electric wire 72 in different positions.
Will appreciate that from aforementioned although specific embodiments of the invention are described for the purpose of explaining, various distortion can be made not breaking away under the spirit and scope of the present invention here.Therefore, the present invention is only limited by claims.
Claims (25)
1. the method for a measurement parameter comprises:
Carry out a plurality of measurements, one of them a little measurement with other measurement is carried out independently;
Obtain measured value in from described a plurality of measurements at least some; And
Use described a plurality of measurement to determine whether at least some the accuracy in described a plurality of measurements is lower than predetermined accuracy.
2. use corresponding a plurality of measuring equipments to carry out a plurality of measurements according to the process of claim 1 wherein that the action of carrying out a plurality of measurements comprises with different operating principle.
3. according to the process of claim 1 wherein that the action of carrying out a plurality of measurements comprises that use carries out a plurality of measurements by corresponding a plurality of measuring equipments that different vendor makes.
4. according to the process of claim 1 wherein that the action that from described a plurality of measurements at least some obtain measured value comprises:
Compare with the combination of value of at least some acquisitions measuring from other according to the value that measure to obtain from least one, abandon one of them measurement; And
Use remaining measurement that described measured value is provided.
5. according to the process of claim 1 wherein that the action that obtains measured value from least some of described a plurality of measurements comprises average described a plurality of measurements.
6. will compare with the determined value of combination from the analog value of each acquisition of described a plurality of measurements according to the process of claim 1 wherein that the action of using described a plurality of measurements to determine whether at least some accuracy in described a plurality of measurement is lower than pre-determined accuracy comprises from the value of described a plurality of measurements acquisitions.
7. according to the method for claim 6, wherein the value of determining from the combination of described a plurality of measurements comprises from the mean value of the analog value of described a plurality of measurements acquisitions.
8. according to the method for claim 1, also comprise, the calibration alarm then is provided if the accuracy of at least some of described a plurality of measurements is lower than pre-determined accuracy.
9. according to the process of claim 1 wherein that the action of carrying out a plurality of measurements comprises that carrying out a plurality of hydrodynamic pressures measures.
10. carry out a plurality of electric measurements according to the process of claim 1 wherein that the action of carrying out a plurality of measurements comprises.
11. according to the process of claim 1 wherein that the action of carrying out a plurality of measurements is included in each of carrying out described a plurality of measurements in the identical measurement environment.
12. a measuring system comprises:
A plurality of measuring equipments, wherein at least some measuring equipments differ from one another, and each of described measuring equipment provides corresponding measured value; And
Be combined into the processor that receives measured values from described a plurality of measuring equipments, this processor can operate from a plurality of measured values at least some to obtain measured value, and this processor also can be operated the calibration drift information that provides about at least some of a plurality of correcting devices.
13. according to the measuring system of claim 12, wherein said a plurality of measuring equipments have the corresponding operating principle that differs from one another.
14. according to the measuring system of claim 12, wherein said a plurality of measuring equipments comprise the measuring equipment of being made by different vendor.
15. measuring system according to claim 12, wherein said processor can be operated and will compare with the resulting value of combination from the measured value of a plurality of corresponding measuring equipments from each of the measured value of corresponding measuring equipment, and based on this relatively, select in the described measured value at least one when determining measured value, to ignore.
16. according to the measuring system of claim 12, wherein the value that obtains of the combination of the measured value that obtains from a plurality of corresponding measuring equipments comprises the mean value of the measured value that obtains from a plurality of corresponding measuring equipments.
17. measuring system according to claim 12, wherein by will comparing with the resulting value of combination of the value that obtains from a plurality of corresponding measuring equipments from the analog value of each acquisition of a plurality of measuring equipments, described processor can be provided by at least some the calibration drift information that provides about in a plurality of correcting devices.
18. according to the measuring system of claim 17, wherein the resulting value of combination of the value that obtains from a plurality of corresponding measuring equipments comprises the mean value of the value that obtains from a plurality of corresponding measuring equipments.
19. according to the measuring system of claim 12, wherein at least some the calibration drift information about in a plurality of correcting devices that is provided by processor comprises the calibration alarm.
20. according to the measuring system of claim 12, wherein each of measuring equipment comprises corresponding pressure transducer.
21. according to the measuring system of claim 12, wherein each of measuring equipment comprises corresponding electric measurement equipment.
22. according to the measuring system of claim 12, wherein said a plurality of measuring equipments are in the identical measurement environment.
23. measuring system according to claim 22, each of wherein said measuring equipment comprises corresponding pressure transducer, and measuring system also comprise in the pressure transducer each with symmetrical manner and its fluid the housing that combines, this housing have with pressure transducer in the pressure port of each fluid communication.
24. according to the measuring equipment of claim 23, wherein pressure port is equidistant with whole pressure transducers.
25. according to the measuring equipment of claim 23, it is irrelevant that wherein pressure transducer is orientated the orientation of the gravity effect that makes on the whole measuring equipment and measuring equipment as.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/137,290 US8655624B2 (en) | 2008-06-11 | 2008-06-11 | System and method for objective self-diagnosis of measurement device calibration condition |
| US12/137,290 | 2008-06-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608927A true CN101608927A (en) | 2009-12-23 |
| CN101608927B CN101608927B (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101406365A Active CN101608927B (en) | 2008-06-11 | 2009-06-10 | System and method for objective self-diagnosis of measurement device calibration condition |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US8655624B2 (en) |
| EP (1) | EP2133665B1 (en) |
| CN (1) | CN101608927B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727963A (en) * | 2012-10-10 | 2014-04-16 | 霍尼韦尔国际公司 | Filter activation and deactivation based on comparative rates |
| CN104204759A (en) * | 2012-02-21 | 2014-12-10 | 德莱赛公司 | Temperature compensated pressure transducer |
| CN105641788A (en) * | 2014-11-28 | 2016-06-08 | 德尔格制造股份两合公司 | Sensor module for respirable gas mixtures, ventilator, therapy device and method |
| CN105723463A (en) * | 2013-11-13 | 2016-06-29 | 弗兰克公司 | Profiles for streamlining calibration test |
| US9817780B2 (en) | 2013-11-13 | 2017-11-14 | Fluke Corporation | Communicator with profiles |
| CN107861082A (en) * | 2017-10-30 | 2018-03-30 | 广东电网有限责任公司电力科学研究院 | A kind of calibration intervals of electronic metering equipment determine method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9465060B2 (en) * | 2013-05-22 | 2016-10-11 | GM Global Technology Operations LLC | Apparatus and method for measuring temperature and electrical resistivity of a movable object |
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| US6823244B2 (en) * | 1995-06-07 | 2004-11-23 | Automotive Technologies International, Inc. | Vehicle part control system including electronic sensors |
| DE19506388C1 (en) * | 1995-02-23 | 1996-08-22 | Buero Fuer Ca Technik Dipl Ing | Method for recognizing systematic errors, in particular for the automatic detection of malfunctions in quality controls, by means of measuring devices equipped with measuring sensors |
| US6868358B2 (en) * | 2002-07-24 | 2005-03-15 | The Goodyear Tire & Rubber Company | Method for processing information in a tire pressure monitoring system |
| WO2004040104A1 (en) * | 2002-10-23 | 2004-05-13 | Robert Bosch Gmbh | Method for testing at least three sensors, which detect a measurable variable for an internal combustion engine |
| US7649614B2 (en) * | 2005-06-10 | 2010-01-19 | Asml Netherlands B.V. | Method of characterization, method of characterizing a process operation, and device manufacturing method |
| JP2006350707A (en) * | 2005-06-16 | 2006-12-28 | Hitachi Ltd | Failure diagnosis device for detection means |
| JP5394240B2 (en) * | 2006-09-20 | 2014-01-22 | コンパニー ゼネラール デ エタブリッスマン ミシュラン | In-tire multi-element piezoelectric sensor |
| US20100243791A1 (en) * | 2006-11-30 | 2010-09-30 | Honeywell International Inc. | Gyroscopic failure detection in a navigation device through sensor correlation |
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2008
- 2008-06-11 US US12/137,290 patent/US8655624B2/en active Active
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2009
- 2009-06-10 CN CN2009101406365A patent/CN101608927B/en active Active
- 2009-06-10 EP EP09007688.6A patent/EP2133665B1/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204759A (en) * | 2012-02-21 | 2014-12-10 | 德莱赛公司 | Temperature compensated pressure transducer |
| CN103727963A (en) * | 2012-10-10 | 2014-04-16 | 霍尼韦尔国际公司 | Filter activation and deactivation based on comparative rates |
| CN103727963B (en) * | 2012-10-10 | 2017-08-08 | 霍尼韦尔国际公司 | Filter activation and deactivation based on comparing rate |
| US10712174B2 (en) | 2012-10-10 | 2020-07-14 | Honeywell International Inc. | Filter activation and deactivation based on comparative rates |
| CN105723463A (en) * | 2013-11-13 | 2016-06-29 | 弗兰克公司 | Profiles for streamlining calibration test |
| US9817780B2 (en) | 2013-11-13 | 2017-11-14 | Fluke Corporation | Communicator with profiles |
| US9909908B2 (en) | 2013-11-13 | 2018-03-06 | Fluke Corporation | Profiles for streamlining calibration test |
| CN105723463B (en) * | 2013-11-13 | 2018-05-04 | 弗兰克公司 | For making the configuration file of calibration test streaming |
| CN105641788A (en) * | 2014-11-28 | 2016-06-08 | 德尔格制造股份两合公司 | Sensor module for respirable gas mixtures, ventilator, therapy device and method |
| US11977063B2 (en) | 2014-11-28 | 2024-05-07 | Drägerwerk AG & Co. KGaA | Sensor module for respirable gas mixtures, ventilator, therapy device and method for measuring a plurality of gases of a respirable gas mixture |
| CN107861082A (en) * | 2017-10-30 | 2018-03-30 | 广东电网有限责任公司电力科学研究院 | A kind of calibration intervals of electronic metering equipment determine method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2133665A2 (en) | 2009-12-16 |
| EP2133665A3 (en) | 2017-03-08 |
| EP2133665B1 (en) | 2018-08-08 |
| US8655624B2 (en) | 2014-02-18 |
| US20090312984A1 (en) | 2009-12-17 |
| CN101608927B (en) | 2012-01-04 |
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